The BD99011EFV-M from ROHM Semiconductor is a DC to DC Converter with Input Voltage 3.6 to 35 V, Output Voltage 1 4.9 to 5.1 V, Output Current 1 2000 mA, Operating Temperature -40 to 105 Degree C, Storage Temperature -55 to 150 Degree C. Tags: Surface Mount, Buck/Step down. More details for BD99011EFV-M can be seen below.